Mathematics > Commutative Algebra

Title:Sally modules of canonical ideals in dimension one and 2-AGL rings

Abstract: The notion of 2-AGL ring in dimension one which is a natural generalization
of almost Gorenstein local ring is posed in terms of the rank of Sally modules
of canonical ideals. The basic theory is developed, investigating also the case
where the rings considered are numerical semigroup rings over fields. Examples
are explored.